Hard Science

Coriolis - The Third Horizon

Hard Science Political Religious Science Fantasy Space Opera

THF Universe

[aloud] In a world driven by military and technological advancements across the galaxies, the many alien factions vie with each other over precursor technology left over from a time long past. hidden, forgotten, and potentially world-ending in the w...

Hard Science Mystery Science Fantasy Science Fiction Space Opera

Opposition: Mars

They say Mars is the graveyard of ambitions. Partially terraformed and populated largely by tribes of genetically modified colonists, one might wonder why the nations of Earth have any interest in a hostile planet like Mars. For a diverse group of No...

Hard Science Military Political Post Apocalyptic Science Fiction

Didome

A planet where the day lasts almost half an Earth year, and human civilizations have adapted to the unique climate.

Hard Science Medieval Science Fiction Speculative

JUMP CORE UNIVERSE

For a century, humanity's most brilliant minds have been entranced by the seductive promise of faster-than-light travel, only to be met with crushing disappointment at every turn. Finian Rist, a globally notorious AI engineer renowned as much for...

Hard Science Science Fantasy Science Fiction Science Fiction, Modern Space Opera

Astra Planeta

Astra Planeta is a hopeful exploration of humanity’s future path to the stars, and the connections we may forge with the other peoples and worlds of the local stellar group.

Exploration Hard Science Science Fiction Speculative

Emergence

Hard Science Political Science Fiction Space Opera

Drift City

Diese Welt ist Schauplatz unserer Mekton Zeta Kampagnen. Mekton Zeta ist ein TTRPG mit Mechas, auch Mektons genannt, das von Mike Pondsmith entwickelt wurde und auf seinem bekannten Werk 'Cyberpunk 2.0.2.0.' basiert. Wir haben die Regeln hier und da...

Cyberpunk Hard Science Mecha Science Fiction Space Opera

Cenargo Corporation

Cenargo was formed by the merger of Centaur Technologies and Argon Aerospace, the companies who funded the development of the Foscolo reactionless displacement drive. It is also responsible for the terraforming of Aphrodite Station off Centauri Prime...

Cyberpunk Hard Science Horror Neo Noir Science Fiction

Tequila Starrise

[p]A thousand years ago, amidst the vast cosmic sea, humanity stirred from a profound slumber. The colossal colony ship U.E.F Paris, a sentinel of their forgotten origins, gently touched down on the en...

Exploration Hard Science Science Fiction

White Reach

Overview In the distant future, mankind has gone to the stars, and taken war with them. As they spread out across hundreds of star systems, a unifying presence came to exist with the Star League. From Terra, the First Lord was supposed...

Hard Science Mecha Military Political Science Fiction

Stellar Journey

[aloud]The relatively small volume of human inhabitation is no lesser for its size. Inside this bubble there are man-made structures, wrapped around entire worlds, others, so plentiful they shine like diamonds in the sky. Planets, both with endless d...

Hard Science Science Fiction Speculative

Pearl Directive

[follow:f21bcf04-4876-4cee-b0dc-1554bbe5b1a8] A one-of-a-kind game that merges the genres of science fiction and fantasy. Players can embark on an immense journey of space exploration and discovery, as they navigate through an ever-...

Cyberpunk Hard Science Mystery Science Fantasy Space Opera

The Sealed Kingdoms

In the far-away region of IC 1848 - also known as the Soul Nebula - lies a sphere of inhabited space measuring roughly 100 light years across. This region is known as the Sealed Kingdoms by those who live there - 'sealed' both for the envelope of ga...

Cyberpunk Exploration Hard Science Space Opera

The Fields Beyond

"Through the mud I trudge to protect a future I'll never see, on a planet I no longer recognise, in a galaxy that will not remember my name" - Recovered Blackbox Uvs Aimag, Shinekhen Tal

Hard Science Horror Military Science Fiction Trenchpunk

Wouraiya

Welcome to Wouraiya! If you're interested in sampling stories, I'd like to suggest a few: [url:https://www.worldanvil.com/w/wouraiya-daskalarch/a/weaponizing-power-of-love2C-and-similar-faff-prose]Weaponizing the Power of Love, and Similar F...

Exploration Fantasy, Low Magic Hard Science Medieval Military

A Dark New World

In the near future, Earth is near collapse. Humanity in it's hubris has fractured into major powers and spread throughout the Solar System, and starting to colonise the closest star systems. Regions are are divided into political factions, and even t...

Adult 18+ Crime Cyberpunk Dystopia Exploration

Blue Way

Blue Way, our first laser highway, is complete and more, to other stars, are in construction. We made it far into to the darkness, but we are still only dipping our toes in the deep cosmic ocean and who knows, what lurks in the deep.

Atompunk Exploration Hard Science Science Fiction Speculative

Real-Life Worldbuilding

[quote]Hey you! Yes, you! Looking for some inspiration, aren't you? Well you're in luck then, because you've come to the right place! Look no further than where you are, your wonder-full planet.[/quote] [p]The diff...

Fantasy Hard Science Modern Science Fantasy Science Fiction

Life Under Four Suns

[aloud]My personal project for competing in WA Summer Camp 2020.[/aloud] [container:callout]This setting proudly uses the [world:d4935f8e-1685-4104-a8e9-4301e1f150f2] for it's campaigns![/container] [quote]Basht slammed the ship controls forward....

Hard Science Science Fantasy Western

Arcturus

Hard Science Science Fiction

Eternity is not Immortal

Nothing is truly immortal, save that which we leave behind us, written into the sands of time. Eventually the winds pick up those sands and blow them around the world, sometimes they will be obliterated by the footsteps of later and greater beings, b...

Dystopia Hard Science Mecha Military Political

Orion Spur

Adult 18+ Cyberpunk Hard Science Horror Science Fiction

Isaac Atomic Solar System

The year is 2247. The solar system has long since been colonized with a total population of around 23 billion, but most people still live on earth, around 20 billion of them. Mars long ago separated from earth, and the gas giants have formed together...

Hard Science Science Fiction Speculative

The AuraVerse

The year is 2424. Humanity has discovered a new planet that is not only habitable, but strangely Earth-like. They called this second Earth "Evergreen" - a planet still in the springtime of its youth. As humanity spread to the "Outer Colonies" in t...

Comedy Hard Science Romance Science Fantasy Space Opera

Ereya

update July 2023: Probably no one's noticed, but for posterity's sake, this project has been dead for a while now. Turns out pure worldbuilding isn't as fun as writing stories. But I'm stabbing the metaphorical corpse with an iron rod, cranking th...

Fantasy Hard Science Military Science Fantasy Science Fiction, Modern

Amoxath

A world that is the home to Shem, Caeldori, Regonar and Venerra, full of all types of races, beasts, and magic! What mysteries are to be found? It's up to you to find out!

Hard Science Supernatural Sword & Sorcery

USS Nightingale

Crew profiles and mission logs for the U.S.S. Nightingale as it explores the Typhon Expanse. Gamemaster's Note: Some of this material has been borrowed from published adventures, from other sources...

Hard Science Science Fantasy Science Fiction, Modern Space Opera

Era'guya

What if you knew how things came to be? What if dragons, gods and men are lost toys dropped in a box by a fickle superpower? What if the dirt was magic? What if you were dropped in this world with no context and no way home? Era'guya is a world wh...

Adult 18+ Alternative History Ancient Atompunk Biopunk

End-of-Life

Science-fiction in a post-digital, pre-FTL era

Cyberpunk Hard Science Science Fiction, Modern Speculative Transhumanism

The Matrioshka Multiverse

The Matrioshka Multiverse is a digital space within a Matrioshka brain - a hyper-advanced, many-layered shell of near-computronium the size of a large planet, powered by a captive black hole and the emissions of several nearby red dwarf companions....

Hard Science Religious Science Fiction Speculative Transhumanism

Long War

Contrary to humanity's expectations, neither leaving Earth nor expanding throught the Galaxy could change human nature. When Mankind expanded throughout the stars, its problems expanded as well. Both in number and in scale. Most of them will...

Dystopia Hard Science Political Science Fiction Space Opera

The Seas of Steel

The Seas of Steel. An inhospitable, global ocean, surrounding the continent of Valemar. Few can navigate the windy sea, with its forbidding currents and deadly inhabitants. But some don't have a choice. Some must navig...

Fantasy Hard Magic Hard Science Medieval

STAR TREK COLOMBO

Hard Science Science Fiction

The Dust and Cold (Themis)

The basic setting is that some humans travels to a distant star system on a fleet of colonial ships. They planned to establish colonies on this habitable desert planet named Themis. But something happened which I'm still slightly undecided on which c...

Comedy Exploration Hard Science Science Fiction Western

The Colossuss Galaxy

Far from the limits of our universe, far from all things you could think about, and far away in the massive black thing that space is, theres a spot, called the Colossuss Galaxy, in which races, exotic planets and even dark obscure things happen dail...

Hard Science Military Political Science Fiction, Modern Space Opera

Arcverse

The Arcverse is a fictional version of our own universe heavily based in scientific fact and plausible speculation. The canonical history of the Arcverse stretches from the Big Bang that began the universe to the final extra-universal migration of al...

Exploration Hard Science Science Fiction Space Opera Speculative

Xahverse

In the distant future, humanity has expanded far from their home system of Sol. Millions of stars have been colonised and humans now number in the quadrillions. Whilst most of the galaxy remains dark and unexplored, some star systems are bustling wit...

Hard Science Post Apocalyptic Science Fantasy Space Opera Transhumanism

Lusus Naturae

Far in the future, a three-headed war is tearing apart our galaxy. In one corner lies the Hearth of Sumolus, a benevolent military junta that is welcoming to most of the galaxy's races. Opposing them directly is the Separatist Toreni Federal...

Cyberpunk Dieselpunk Hard Magic Hard Science Science Fantasy

Earth

This is the Earth in the year 2034 AD. This world was created for the Tale Foundry competition.

Hard Science Horror Science Fiction, Modern Supernatural

Shelder

The "perfect" Earth clone... only 23 million light years away! Planet Shelder. Four billion and a half years of evolution to get here, now: explosive bio-diversity ranging from the micro to the macro. Danger lurking behind every c...

Exploration Hard Science Science Fiction Speculative

TEST WORLD

to test features and try to break Dimitris's work (Sorry pal, it's for your own good :D ) ----- Please create a note with the description of the bug and how it happened if you can. Something like: I had an article crash with error 500....

Adult 18+ Alternative History Ancient Atompunk Biopunk

The Yggdrasil Directive

Exploration of a Galaxy seeded with life that had evolved from all of Earth's 7.5 million individual species of animals.

Adult 18+ Exploration Hard Science Science Fantasy Science Fiction

Solar system 212X

Идет 2121 год. Человечество, как вид продолжает процветать. Население Земли достигло 13 миллиардов, огромные агломерации мегаполисов и агрикультурные комплексы покрывают 3/4 суши. Люди осваивают мировой океан как новый хабитат, а также основали 3 мег...

Cyberpunk Hard Science Political Science Fiction Transhumanism

Invasive Species

It has been 759 years since the Ikaros Colonial Flotilla brought terror to Kepler 77c Whether intentionally, by accident, or through some form of horrific sabotage, the outcome remains the...

Hard Science Political Science Fiction Solarpunk Urban

The Sol System

Hard Science Science Fiction Space Opera

Talifar

Talifar is the setting for the Tales From Talifar novels. In development for over two decades from the mother-and-son team of Josh Foreman and Rose Foreman. Rose is a science fiction / fantasy author and writing teacher. Josh has been building worlds...

Fantasy Hard Science Science Fantasy

WoD: After the Fall

The fifth possibly final fall of man, the one prophesied by gods and by billions of mortal men and best has come and gone. Worlds destroyed or left in ruin, inter races wiped out or on the brink of extinction. Yet we have recovered. On the ruins...

Cyberpunk Hard Magic Hard Science Post-modern Science Fantasy

15th Realm of Secrets

Welcome to the 15th Realm of Secrets (15ROS for short). In this magicless sciency themed fantasy world you will leaf through my pet project fictional world with many creatures, nations, peoples, environments, histories, cultures and more. From the ha...

Ancient Fantasy Hard Science Military

After Earth

In the early 1970s, scientists warned of the consequences of climate change. Greenhouse effect, polar ice melt, droughts, dying forests and storms. But these warnings were dismissed as scaremongering or ignored. Even at the beginning of the 2...

Hard Science Science Fiction, Modern

Licentia

[quote] Our zombies are different!|Literally every writer ever[/quote] Welcome to the landing page for everything related to this world! Please be aware that some content on both my twitter accounts and this website might be graphic, so considering...

Biopunk Hard Science Political Post Apocalyptic

Xeno-IV

Cyber-Organic Planet Originally Roamed the Jarowins. They were a smart race constantly creating and building. They built a Cyber Race, they Called them Exo's. Together as Man and Machine they built together for thousands of years until a plague. The...

Cyberpunk Exploration Hard Science Military Political

Into the Black

2169 and Earth has built itself out of a home. Humanity 30 Billion strong, those who haven't left megacity earth have moved to the stars in hopes of better lives and opportunities. Others left to avoid their demons planetside. Yet still others were b...

Cyberpunk Hard Science Space Opera Weird

Wayfarers Universe

The Wayfarers Universe is a science fiction setting that follows the trials and travels of the Szassar, a race of space-faring reptilian hexapods who are rebuilding their civilisation after succumbing to an intellect-sapping extra-terrestrial phage....

Hard Science Post-modern Science Fiction Science Fiction, Modern Speculative

Athena Minerva

A slight alteration in the history of mammals causes a subtle but powerful shift in human societies far into the future. As early human women are much more likely to survive childbirth, (and perhaps a bit more self-centered than the human women of P...

Adult 18+ Cyberpunk Hard Science Science Fiction Solarpunk

Shatterlands

[spotify:https://open.spotify.com/track/4UQIn1fuVwapZHl59OJz2e?si=ghqgvS3LR12B2KIvHlf0cw] [p]"Yet still[/p] [p]we continue[/p] [p]to persist..."[/p]

Dystopia Hard Science Post Apocalyptic Science Fiction, Modern Speculative

The Surrey

Welcome to The Surrey, an independent hauler based out of Ceres running on the Earth flag, but behold...

Hard Science Science Fiction

Domain

[quote] The universe is big. In the Milky Way Galaxy alone there are millions of stars, with millions of planets orbiting them. We know that at least some of them must harbor life, and that at least some of that life must be intelligent. At least som...

Exploration Hard Science Military Science Fiction

Angaran Expansion Project

The angara from Bioware's Mass Effect: Andromeda are a fascinating race. However, our meeting with them takes place so quickly and during such a complex series of events that there would have been a lot of confusion and missing information... Where w...

Fanfiction Hard Science Informational Science Fantasy Science Fiction

Ichor

-WIP- In the 32nd century, humanity has spread out from their original home of Terra (formerly "Earth") and colonized an area a dozen or so light-...

Biopunk Hard Science Mecha Speculative Evolution

Celestial Grove

One of these days I will write a proper world introduction.

Exploration Hard Science Science Fiction Speculative

The Universe: Galactic Empires

In the not so far future, battle for control over the galaxy rages. Massive, star spanning Empires battle it out to carve their mark on this ever shrinking galaxy where anything from sprawling, planet covering mega cities to extradimensio...

Hard Science Military Science Fantasy Science Fiction

Emergence

The mysteries of space unfold to the citizens of the Galactic Planet Federation. Nearly 200 years ago, humankind discovered the great power of warp travel. With this, they set out upon the stars to explore the last great frontier. Corporations a...

Hard Science Science Fiction Space Opera

The Sirius Galaxy

The cold, dark, reaches of space beyond the Sirius Galaxy are just that; no light of a twinkling star, no noise to be picked up by the most advanced equipment. It would be terrifying if the systems filling Sirius had an official, public count, and ha...

Dystopia Hard Science Horror Science Fiction Space Opera

The Vast Drift

There was no inciting incident. Nothing of particular galactic-affecting significance occurred. Simply a long time, and slow but steady progression of culture and technology brought us to where we are today.

Cyberpunk Hard Science Science Fiction, Modern Superheroic

The Chord

Hard Science Science Fantasy Science Fiction Victorian

High Guard

The High Guard, or SCHG, is an Oceanic (Australia and New Zealand) Massively Multiplayer Online Gaming Guild, Clan, Group, and Community consisting of mature gamers (age 18+). It represents a dynamic and multifaceted guild that blends rig...

Adult 18+ Hard Science Military Science Fiction Space Opera

The Dragonsong Chronicles

Welcome Adventurers, to the Dragonsong Chronicles. This is a world, set within the Forgotten Realms, Dungeons and Dragons setting. This story, begins in the year 1500, and currently active adventures are happening in the year(s) 1904 - 1906...

Adult 18+ Exploration Fantasy, High Magic Hard Magic Hard Science

Gala Supercluster

Cyberpunk Hard Science Military Science Fantasy Space Opera

Lexicon / Lekcaekon

A cross between Krypton and Kryptonians from Superman and (mostly) Lexicon and Lexiconians from the cartoon WordGirl with an extremely strong dash of hard scientific accuracy, realism, depiction, and portrayal cause why not?

Hard Science Science Fiction Science Fiction, Modern

Legacy of Daedalus

The Daedalus, a damaged starship on a one-way journey to Trinity, the only inhabitable planet of Tau Ceti. For the children born en route, it was the only home they'd ever known. Reared by the ship's robots and cut off from communication with a ravag...

Hard Science Post Apocalyptic Science Fiction Space Opera

Deep Space Pioneer

Dans un lointain futur, l'Humanité s'est étendue à travers les étoiles, conquérant de nouvelles terres d'opportunités et rencontrant de nouvelles races aliens dans le processus. Mais profitant...

Hard Science Science Fiction Space Opera

The Octant

Venture into The Octant, a universe where the marvels of countless worlds, the mysteries of unexplored territories, and the sagas of diverse civilizations converge into an ever-expanding cosmic tapest...

Hard Science Mystery Science Fantasy Science Fiction Space Opera

Galaxy in Eclipse

Adult 18+ Hard Science Science Fiction Space Opera

Patron Saints

Space is a wide, wild place. Sometimes, the lines between good and evil are blurred and you have to start wondering: are the monsters right?

Hard Science Science Fiction Science Fiction, Modern

Gaius

SENTENCE: Prelude wants to retrieve the time sword from the temple of time before the next planer alignment in order to bring the Society for the Advancement of Human Biology into the present day...

Biopunk Fantasy Hard Magic Hard Science MagiPunk

Sci-Fi Project

Cyberpunk Hard Science Historical Horror Mecha

Spinas Mundi

What happens when the vertebrates who rule the earth fall? What would happen if the invertebrates were given the chance to come out of the shadows? Spinas Mundi is the world of insects, arachnids, crustaceans, mollusks, cnidarians, annelids, echin...

Hard Science Speculative Evolution Weird

Encyclopædia Galactica

Hard Science Military Science Fiction Space Opera

Curitane

Nearly a hundred years ago, an empire ran from coast to coast, from each weale. But all must come to the end. With the revolution of the city state of Stalingrad against the current monarch. The monarch's direct control over Stalingrad led the civili...

Adult 18+ Decopunk Hard Science Romance

Andalusada

As far as the world is concerned, today is 22 Nisan 5690, the final day of Passover. Today is 20 April 1930, Easter Sunday. Today is 22 Dhu'l-Qi'dah 1348, a day for Muslims to ignore the ulama, bring dessert to someone else's holiday, and get drunk....

Alternative History Dieselpunk Hard Science Political Speculative

The World of Az

A world, not dissimilar in origin to our own real Earth, though with a few key differences. First and most obvious is the presence of magic that has been around since the dawn of the three great races of man, giant and the Vull'jorg (reminiscent of t...

Fantasy Hard Magic Hard Science Informational Military

Terra, CE 2267

This world/universe is the future of humanity through the Sol system and then the systems beyond our own. This universe outlines my take on the history, technology, corporations, biology, and other elements. Hard sci-fi for the most part, as I enjoy...

Hard Science Science Fiction Science Fiction, Modern Speculative

The Scion's Reach

By the end of the 21st century, Earth and her colonies were on the brink of societal collapse. In an attempt to preserve human civilization as we knew it, the first extrasolar colonization program was founded: the Odyssey Initiative. Bringing tog...

Hard Science Science Fiction

S.A.V.E.

Cyberpunk Hard Science Post Apocalyptic Science Fiction Speculative

Verge of the Void

[quote] [p]Aus den Sternen kamen wir. Aus den leeren Weiten formten wir Ursprung.[/p] [p]Genötigt von unserer Gier, gefunden von unseren Ahnen, gemacht von unserer Hand; mannigfaltig sind unsere Wege, die u...

Crime Hard Science Science Fiction Transhumanism Western

Aetherverse

The Aetherverse....is it the past? The present? The future? Who knows, no one knows... It is a distant galaxy, or maybe just an alternate universe? It isn't our Milky Way that's for sure. The Aetherverse is a galaxy full of wonders, the tech...

Hard Science Military Science Fantasy Science Fiction Speculative

[Our] Stellar Exodus

https://stellarexodus.com/ (free-to-read)

Cyberpunk Dystopia Hard Science Political Science Fiction

UberSpace

[color:#e86e04]A Science Fiction Experience spanning a number of different games and activities...[/color] [color:#e86e04]Part RPG, part Megagame, part Board Game and part Hands-On Starship BRIDGE Simulator all get wrapped up into one epic ad...

Exploration Hard Science Science Fiction Science Fiction, Modern Space Opera

Alt Earth

Hard Science Military Science Fiction

Imou

The world of Imou primarily consists of two continents: Alomund, the birthplace of civilization, now a continent divided Equan, the new land, now threatened by their own creation. Mana is the driving force of this world, but it may be causi...

Hard Magic Hard Science Science Fiction

Sol

A near-future look at our solar system

Hard Science Mecha Science Fiction Space Opera Western

The DRUniverse

What do you get when you cross George Miller cosplayers, a low fantasy kingdom, god knows how many mercenaries and a bandit problem? Apparently this. The DRUniverse is a strange multimedia shared universe, set in a post-apocalyptic/low fantasy world...

Fantasy, Low Magic Hard Science Post Apocalyptic Science Fantasy

The Klustraa System

Klustraa is a typical star in the way of size and color, but it seems to have had an unusually large amount of debris orbiting it in its early years, as it has many, many planets and moons. Some of these worlds are teeming with life, chief among th...

Fantasy, High Magic Hard Science Medieval Steampunk Sword & Sorcery

PROHIBITION

Crime Hard Science Slice of Life Urban

Paradigm

Someone once told me that we tell only the stories that are memorable, the stories that have novel experiences and interesting conclusions. It wasn't until much later in my life that I understood what that stranger meant. We may consider life mundane...

Exploration Fantasy Fantasy, High Magic Hard Science Political

15000 Light Years from Home

Separated from Earth by thousands of light years, the decedents of displaced Epsilon Indi colonists have carved out a life within the Inner Norma Arm, founding new homes and nations across dozens of systems. Wonders are constructed, wars are waged, p...

Exploration Hard Science Science Fiction

Luminal Flare

[youtube:https://youtube.com/watch?v=UNceFac8YK8]Luminal Flare is a hard sci-fi, far future dance of atomic starships, thermonuclear broadsides, stellar exploration, cybernetic augmentation, digital ascension, and relativistic supe...

Cyberpunk Exploration Hard Science Science Fiction Transhumanism

Astra Rho

The worlds of sector Astra Rho were hit hard by the Scream, and it left many of them ruined, broken, and isolated from one another. But with the rediscovery of old spike drives and ships on several worlds and moons across the sector in the past few c...

Hard Science Political Science Fiction Space Opera

Allwanduir

Allwanduir is a small planet beyond the limits of the observable Universe. It is part of a solar system consisting of only three planets, of which one is almost a twin to Allwanduir, and the second one a gas giant. They orbit a small star. The pla...

Exploration Hard Science Science Fantasy Science Fiction Science Fiction, Modern